Simplicity Mustang 480mm Walk Behind Mower Manual

Parts Manual
Mfg. No: MCA489-BC
Mustang 480mm Walk Behind Mower
Copyright © Briggs & Stratton. All Rights reserved
25-Feb-2022
Table Of Contents
Model Components
Page
Blade Group (MCA489). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chassis Group (MCA489). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Handles & Catcher Group (MCA489). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Specification Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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25-Feb-2022
Blade Group (MCA489)
Note: Unless noted otherwise, use the standard torque specifications
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Copyright © Briggs & Stratton. All Rights reserved
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Mfg. No: MCA489-BC
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Blade Group (MCA489)
REF NO
PART NO
10
35
35
122Q72-0159-H1
CA09459G
CA09456G
36
CA09470S
--
CA09277P
--
CA09470P
39a
39b
40
43
44
EN72620B
EE14537B
EN72534D
EE14541B
EE14417A
44
EN73096A
QTY
DESCRIPTION
* ENGINE, 850 Series Briggs & Stratton
BLADE DISC, Mulch or Catch
BLADE DISC, Catch
-(Catch Only)
KIT, Blade & Bolt, (1 Pair)
-(Set of 2)
KIT, Hardware, Blade, Washer, Nut , Bulk Pack (50 Pairs)
-(Bulk set of 50 pairs)
BLADE KIT, BULK PACK (40 PAIRS)
-(Bulk set of 40 pairs)
WASHER, 2 Stroke
WASHER, Blade Disc, 4st
NUT, Nylock, 2-Stroke models
BOLT, Blade Disc
SLEEVE
-(4 Stroke)
SLEEVE
-(2 Stroke)
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Footnotes:
Note* To verify your specific engine model, please reference the ID Tag located on your engine. See your local Briggs & Stratton distributor for parts and service.
Copyright © Briggs & Stratton. All Rights reserved
5
25-Feb-2022
Chassis Group (MCA489)
Note: Unless noted otherwise, use the standard torque specifications
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Mfg. No: MCA489-BC
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Chassis Group (MCA489)
REF NO
PART NO
9
CH86282R
9
CH86282G
10
13
13a
14
15
16
17
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
CH85865A
CH86260AW
CH82917A
CH84861A
CH86277A
HA20440D
CH86250B
CH86250F
HA25849A
CH86259A
CH86258A
CH86281A
CH86270G
CH86268D
CH85943A
HA20436D
CH86262AW
CH86276A
CH86308A
CH86271A
HA25839A
CH86298P
CH86275A
CH82670B
HA21186D
QTY
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Copyright © Briggs & Stratton. All Rights reserved
DESCRIPTION
Rear flap assembly
-(Blue)
Rear flap assembly
-(Black)
SPRING, Rear Flap
AXLE, Rear
KNOB, Height Adjuster
BUSHING, Rear Axle
SKIRT, Rear
SCREW, Rear Axle Retainer
BASEPLATE, Blue
BASEPLATE, Antique Silver
HOSE CONNECTION
SIDE TRIM, Right
SIDE TRIM, Left
SEGMENT, Height Adjustment
MULCH PLUG, Black
LINK, Connecting
SPRING, Connecting Link
SCREW, Side Trim
AXLE, Front
BUSHING, Front Axle
BUSHING, Wheel
WHEEL ASSEMBLY
BEARING, Wheel, 14.1 x 28.0mm 8 off
RETAINER, Wheel
HUB CAP
RETAINER, Front Axle
SCREW, Front Axle Retainer
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Handles & Catcher Group (MCA489)
Note: Unless noted otherwise, use the standard torque specifications
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Mfg. No: MCA489-BC
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Handles & Catcher Group (MCA489)
REF NO
PART NO
1
6
7
8a
8b
41
CH86205GT
CH86781P
CH86202GW
HA20439D
----GC11765P
41
GC11792P
42
48
GC11767V
CH86177D
49
50
TC05020A
-----
QTY
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Copyright © Briggs & Stratton. All Rights reserved
DESCRIPTION
HANDLE, Upper, Comfort Grip
LOCKING LEVER PACK
HANDLE, Lower, Looped
BOLT, Lower handle
NUT, Nylock, M8
CATCHER ASSEMBLY
-(Blue and Silver)
CATCHER ASSEMBLY
-(Black)
VENT & MESH PACK, Adjustable Vents, Silver
GUIDE, Starter Cord
-(Optional Item. Not included on all models.)
THROTTLE CONTROL
NUT, Nylock, M5
-(Optional Item. Not included on all models.)
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Hardware Identification & Torque Specifications
Torque Specification Chart
Torque Specification Chart
FOR STANDARD METRIC MACHINE HARDWARE (Tolerance ± 20%)
Property
Class
5.6
8.8
Class 5.6
Class 8.8
in/lbs
Size Of
Hardware ft/lbs
M3
M4
M5
M6
M7
M8
M10
M12
M14
M16
M18
M20
M22
M24
M27
M30
M33
M36
M39
5.88
13.44
26.4
44.64
5.2
7.7
15
26
42
64
89
126
169
217
320
435
590
759
988
10.9
Nm.
Nm.
in/lbs
ft/lbs
.56
1.28
2.50
4.3
7.1
10.5
21
36
58
88
121
171
230
295
435
590
800
1030
1340
13.44
30.72
60.96
7.3
12.1
17.7
35
61
101
147
202
290
390
497
733
995
1349
1740
2249
1.28 19.2
2.90 43.44
5.75 5.97
9.9 10.3
16.5 16.9
25
24
50
48
83 86.2
136
132
210
200
287
275
405
390
559
530
708
375
995 1032
1350 1401
1830 1902
2360 2441
3050 3163
SAE Grade 2
Class 12.9
Size Of
Hardware
Nm.
in/lbs
ft/lbs
Nm.
1.80
4.10
8.10
14
23
34
67
117
185
285
390
550
745
960
1400
1900
2580
3310
4290
22.92
52.56
7.15
12.1
19.9
29
59
103
162
250
346
486
656
840
1239
1681
2278
2935
3798
2.15
4.95
9.7
16.5
27
40
81
140
220
340
470
660
890
1140
1680
2280
3090
3980
5150
20
10
30
40
50
60
80
70
Body Length
Screw, M8- 1.25 x 25
Thread
Diameter (mm)
Threads
Inside
Diameter (in) per inch
1/4
1/2
3/4
1
2.1
2.3
3.1
3.5
7.6
8.6
15.0
16.3
27.2
31.3
40.8
47.6
68.0
74.8
88.4
102.0
122.4
136
217.6
244.8
190.4
210.8
299.2
326.4
Body
Length (mm)
Body
Length (in)
in/lbs
ft/lbs
30
31
43
49
8
10
17
19
30
35
50
55
75
90
110
120
150
180
260
300
400
440
580
640
SAE Grade 8
Nm.
in/lbs
ft/lbs
Nm.
3.4
3.5
4.9
5.5
10.9
13.6
23.1
25.8
40.8
47.6
68.0
74.8
102.0
122.4
149.6
163.2
204.0
244.8
353.6
408.0
544.0
598.4
788.8
870.4
41
43
60
68
12
14
25
29
45
50
70
80
110
120
150
170
220
240
386
420
600
660
900
1,000
4.6
4.9
6.8
7.7
16.3
19.0
34.0
34.0
61.2
68.0
95.2
108.8
149.6
163.2
204.0
231.2
299.2
326.4
525.0
571.2
816.0
897.6
1,244.0
1,360.0
NOTES
1. These torque values are to be used for all hardware
excluding: locknuts, self-tapping screws, thread forming
screws, sheet metal screws and socket head setscrews.
2. Recommended seating torque values for locknuts:
a. for prevailing torque locknuts - use 65% of grade 5
torques.
b. for flange whizlock nuts and screws - use 135% of
grade 5 torques.
3. Unless otherwise noted on assembly drawings, all torque
values must meet this specification.
Screw, 1/2- 16 x 2
Nut, 1/2-16
0
Distance between
threads (mm)
Threads
per inch
Thread
Diameter (mm)
Body
Diameter
19
20
27
31
66
76
11
12
20
23
30
35
50
55
65
75
90
100
160
180
140
155
220
240
SAE Grade 5
Nm.
100
90
Body
Diameter
Nut, M8
in/lbs
ft/lbs
8-32
8-36
10-24
10-32
1/4-20
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
7/16-20
1/2-13
1/2-20
9/16-12
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
7/8-14
1-8
1-12
The guides and ruler furnished below are designed to
help you select the appropriate hardware.
0
No
Marks
Hardware
Grade
12.9
Class 10.9
in/lbs
ft/lbs
FOR STANDARD MACHINE HARDWARE (Tolerance ± 20%)
1/4
1/2
3/4
2
1/4
1/2
3/4
3
1/4
1/2
3/4
4
Common Hardware Types
Hex Head Capscrew
Washer
Standard Hardware Sizing
When a washer or nut is identified as 1/2” (M8), this is
the Nominal size, meaning the inside diameter is 1/2 inch
(8mm metric thread diameter); if a second number is present
it represents the threads per inch (distance between threads).
When bolt or capscrew is identified as 1/2 - 16 x 2” (M8 - 1.25 x 50),
this means the Nominal size, or body diameter is 1/2 inch (8mm
metric thread diameter), the second number,16, represents the
threads per inch, (distance between threads). The final number
is the body length of the bolt or screw, 2 inches (50mm).
Lockwasher
Carriage Bolt
Hex Nut
Wrench & Fastener Size Guide
1/4” Bolt or Nut
Wrench—7/16”
5/16” Bolt or Nut
Wrench—1/2”
3/8” Bolt or Nut
Wrench—9/16”
M6 Bolt or Nut
Wrench—10mm
M8 Bolt or Nut
Wrench—13mm
M10 Bolt or Nut
Wrench—17mm
7/16” Bolt or Nut
1/2” Bolt or Nut
Wrench (Bolt)—5/8”
Wrench—3/4”
Wrench (Nut)—11/16”
M12 Bolt or Nut
Wrench—19mm
M14 Bolt or Nut
Wrench—22 mm
Copyright © Briggs & Stratton. All Rights reserved
25-Feb-2022

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